Most knee pain in adults comes from one of four things: osteoarthritis, a meniscus tear, patellofemoral pain (“runner’s knee”), or a tendon problem. For the most common one, osteoarthritis, the treatments with the strongest evidence are not injections or surgery: they are structured exercise, weight loss and topical anti-inflammatory gel. Those three are first-line in every major guideline.
Cortisone shots give short-term relief. Hyaluronic acid and PRP injections have mixed evidence. Arthroscopic “clean-outs” for worn knees performed no better than sham surgery in a landmark trial. Knee replacement works well for end-stage arthritis, but in 2023 only 59% of Canadians got one within the 26-week benchmark. Semaglutide (Wegovy) reduced knee arthritis pain in a 2024 trial. BPC-157, the peptide people search for, has encouraging animal data and almost no controlled human evidence. Below, every option, what it costs in Canada, and how to decide.
What’s actually causing your knee pain
Treatment depends on the cause, and the four common causes behave very differently. Here is how to tell them apart in broad strokes (a clinician can confirm with an exam, and sometimes an X-ray).
| Cause | Typical person | What it feels like |
|---|---|---|
| Osteoarthritis | Usually 45+, often overweight or with an old injury | Aching with use, morning stiffness under 30 minutes, grinding, gradual worsening over years |
| Meniscus tear | Twisting injury at any age, or “degenerative” tear after 40 | Pain on one side of the joint line, swelling, catching or locking |
| Patellofemoral pain (runner’s knee) | Runners, teenagers, people who sit a lot | Pain around or behind the kneecap, worse on stairs, squatting or after sitting |
| Patellar or quadriceps tendinopathy | Jumping sports, sudden training increases | Pain just below or above the kneecap, sore when loading |
Osteoarthritis is by far the most common cause in adults. Arthritis Society Canada estimates about 6 million Canadians live with some form of arthritis, and osteoarthritis is the most common type. It is not simply “wear and tear”: it involves the whole joint, including cartilage, bone, the joint lining and the muscles around it. That is why strengthening those muscles helps so much.
An important detail: X-ray findings and pain often don’t match. Many people with severe-looking X-rays have little pain, and many with mild changes hurt a lot. Your symptoms and function matter more than the picture.
When knee pain is urgent
Get medical care quickly, rather than self-treating, if you have:
- A hot, red, swollen knee, especially with fever: possible joint infection, which is an emergency.
- An injury after which you cannot bear weight, or the knee looks deformed.
- Rapid swelling within hours of an injury, often a sign of a ligament tear or fracture.
- A knee that is truly locked and cannot straighten.
- Calf pain and swelling, particularly after surgery or a long flight: possible blood clot.
The proof scorecard
Here is how the options for knee osteoarthritis stack up, based on randomized trials and the 2019 OARSI international guideline (Bannuru et al., 2019).
| Treatment | Strength of evidence | Typical benefit | Main downside |
|---|---|---|---|
| Structured exercise | Very strong | Less pain, better function, lasting | Takes 6–12 weeks |
| Weight loss (if overweight) | Strong | Less pain, less joint load | Hard to achieve and keep |
| Topical NSAID gel | Strong | Moderate pain relief | Skin irritation |
| Oral NSAIDs | Strong | Moderate pain relief | Stomach, kidney, heart risks |
| Cortisone injection | Strong for short term | Weeks of relief | Wears off; repeated use concerns |
| Hyaluronic acid injection | Mixed | Small benefit for some | Cost, inconsistency |
| PRP injection | Mixed, contested | Variable | Cost, not standardized |
| Arthroscopic clean-out | Strong evidence of no benefit for degenerative knees | Same as sham | Surgical risk for no gain |
| Knee replacement | Strong, for end-stage disease | Large improvement for most | Major surgery, recovery, wait |
| BPC-157 / TB-500 | Animal data; minimal human | Unknown | Unregulated, not approved |
Exercise therapy: the most underrated treatment
If knee arthritis exercise were a pill, it would be a blockbuster. Dozens of trials show that supervised strengthening and neuromuscular exercise reduce pain and improve function in knee osteoarthritis, with effects comparable to anti-inflammatory drugs and without their side effects. It is first-line in every major guideline, including the OARSI guideline.
Why it works
- Stronger quadriceps and hip muscles absorb force that would otherwise hit the joint.
- Better movement control reduces the inward collapse of the knee that overloads one side.
- Movement feeds cartilage: cartilage has no blood supply and gets nutrients from joint fluid pumped by loading and unloading.
- Pain systems calm down with graded, confident movement.
What a good program looks like
The best-known structured program is GLA:D (Good Life with osteoArthritis: Denmark), now offered by trained physiotherapists across Canada as GLA:D Canada. It combines education with about 12 sessions of supervised neuromuscular exercise over six weeks. Typical elements:
- Sit-to-stand from a chair, progressing to lower seats or added weight
- Step-ups and step-downs with good knee alignment
- Bridges and side-lying hip work for the glutes
- Balance work, such as single-leg standing
- Low-impact cardio: cycling, swimming, walking
Some discomfort during exercise is fine. A common guide is pain up to about 5 out of 10 that settles within 24 hours. If it is worse the next day, ease off, but don’t stop moving. Rest alone usually makes arthritis stiffer and weaker.
How long until it works
Expect noticeable improvement in 6 to 12 weeks, and keep going: benefits fade when people stop. The goal is a routine for life, not a 6-week course.
Weight loss, and what Ozempic did for knee pain
Knees carry a multiple of your body weight with every step. In a well-known study of older adults with knee arthritis, each pound of weight lost removed about four pounds of load from the knee per step (Messier et al., 2005). Fat tissue also releases inflammatory signals that may affect joints directly.
In guidelines, losing 5–10% of body weight is linked with meaningful pain improvement in people who are overweight, and larger losses tend to help more.
The STEP 9 trial
In 2024, a trial in the New England Journal of Medicine tested semaglutide 2.4 mg (Wegovy) in people with obesity and painful knee osteoarthritis. Over 68 weeks, the semaglutide group lost substantially more weight and reported significantly greater reductions in knee pain than the placebo group, with better physical function (Bliddal et al., 2024). It was the first strong evidence that a GLP-1 drug improves arthritis pain, likely through weight loss and possibly through anti-inflammatory effects.
For the options, prices and coverage, see our full guide to weight loss injections in Canada. Wegovy and Zepbound need a prescription and are not approved specifically for knee pain.
Pain medication: gels, pills and what to avoid
Topical NSAIDs: start here
Diclofenac gel (Voltaren and generics, sold over the counter in Canada) is recommended as a first-line drug for knee arthritis by OARSI, because it works nearly as well as pills for many people while delivering far less drug to the rest of the body. The knee is close to the skin, which makes it a good target.
Oral NSAIDs
Ibuprofen, naproxen and prescription options like celecoxib relieve pain and inflammation. They carry real risks with long-term use: stomach ulcers and bleeding, kidney strain, high blood pressure and cardiovascular events. Use the lowest dose for the shortest time, and check with a doctor or pharmacist if you have heart, kidney or stomach problems or take blood thinners.
Acetaminophen
Once the default, acetaminophen (Tylenol) turned out to give only a very small benefit for arthritis pain in trials. It is still an option for people who cannot take NSAIDs.
Duloxetine
This antidepressant also dampens pain signalling and is recommended by some guidelines for people with widespread pain or depression alongside knee arthritis.
Opioids
Opioids are not recommended for chronic knee arthritis: modest benefit, significant risks of dependence, falls and side effects.
Cortisone injections
A corticosteroid shot into the knee calms inflammation and often brings relief within days that lasts a few weeks. That makes it useful for a bad flare, or to make an exercise program possible.
The caution is with repeated injections. In a two-year trial, people who received triamcinolone shots every three months had slightly more cartilage loss on MRI than those who received saline, and no better pain relief over the long term (McAlindon et al., 2017). Most clinicians limit cortisone to a few injections a year.
Hyaluronic acid (“gel”) injections
Hyaluronic acid is a natural component of joint fluid that gives it its slippery, cushioning quality. “Viscosupplement” injections (brands such as Synvisc, Durolane and Monovisc) aim to restore it. Results across trials are inconsistent: some people feel better for months, but large reviews find the average benefit over placebo is small. Guidelines are split, with OARSI giving it a conditional recommendation for some patients.
In Canada, hyaluronic acid injections are usually not covered by provincial plans; many private plans cover them partially. A course commonly costs a few hundred dollars.
PRP injections
Platelet-rich plasma concentrates platelets from your own blood and injects them into the knee, on the idea that platelet growth factors calm inflammation and support tissue. It is popular at sports medicine and private clinics.
The evidence is genuinely contested. Some trials and meta-analyses report better pain scores than hyaluronic acid or cortisone at 6 to 12 months. But a rigorous placebo-controlled trial in Australia found PRP was no better than saline for knee arthritis pain or cartilage volume at 12 months (Bennell et al., 2021). One reason for the conflicting results is that PRP preparations differ widely in platelet and white-cell concentration.
PRP is not covered by provincial plans in Canada and is typically several hundred dollars per injection, often given as a series.
Braces, insoles and walking aids
- Unloader braces shift load away from the worn side of the knee. Useful for some people with arthritis mostly on one side.
- Knee sleeves provide warmth and a sense of support; low risk.
- Lateral wedge insoles were once popular; trials show little benefit.
- A cane in the opposite hand meaningfully reduces knee load and is underused.
Glucosamine, turmeric and other supplements
| Supplement | Evidence | Verdict |
|---|---|---|
| Glucosamine / chondroitin | Large independent trials largely negative | Not recommended by OARSI; low harm |
| Turmeric / curcumin | Small trials, some positive | Possible modest effect; quality varies |
| Fish oil | Weak for knee pain | Not a joint treatment |
| Collagen peptides | Small, often industry-funded | Unproven |
| Vitamin D | No benefit unless deficient | Test, don’t guess |
Arthroscopy: the surgery that didn’t beat placebo
For years, people with arthritic knees or worn (degenerative) meniscus tears were offered arthroscopic “clean-outs.” Then came the trials. In a Finnish study, patients with degenerative meniscus tears had either a real partial meniscectomy or a sham operation in which surgeons only made the incisions. At 12 months, both groups improved equally (Sihvonen et al., 2013). Other trials found similar results for arthroscopic washout in arthritis.
Arthroscopy still has a role for specific problems, such as a large torn flap that is mechanically locking the knee, or ligament reconstruction. But for typical degenerative pain, exercise therapy first is the evidence-based approach.
Knee replacement and Canadian wait times
Total knee replacement is one of the most successful operations in medicine for end-stage arthritis. Most people report major improvements in pain and function, and modern implants commonly last 20 years or more. It is considered when pain and disability remain severe despite well-done conservative care.
The wait
Canada’s benchmark is surgery within 26 weeks of the decision to operate. According to the Canadian Institute for Health Information, 59% of knee replacements in 2023 were done within that benchmark, down from 70% before the pandemic, with wide variation by province (CIHI, 2024). Waiting time to see the surgeon in the first place is not counted in that number.
Making the wait count
- “Prehab”: people who go into surgery stronger tend to recover faster.
- Weight loss lowers surgical risk and may improve symptoms enough to delay surgery.
- Ask about regional central intake: several provinces pool referrals so you can see the first available surgeon.
Recovery
Expect walking with an aid within a day or two, intensive physiotherapy for 6 to 12 weeks, and continued improvement for up to a year. Stiffness is the most common complaint; diligent early rehab is the best defence.
Meniscus tears: what changes
The menisci are two C-shaped cartilage pads that cushion the knee. Two very different situations share the same name:
- Traumatic tears in younger, active people (often from twisting) may need repair, especially if the knee locks.
- Degenerative tears after age 40 are extremely common on MRI, even in people with no pain. They usually respond as well to exercise therapy as to surgery.
The outer third of the meniscus has a blood supply and can heal; the inner part largely cannot, which is part of why tissue-repair research is interested in it.
Runner’s knee and tendon pain
Patellofemoral pain responds best to hip and quadriceps strengthening, temporarily reducing aggravating activities (deep squats, stairs, downhill running), and gradually rebuilding load. Taping and foot orthoses can help some people in the short term.
Patellar tendinopathy (“jumper’s knee”) responds to progressive loading: isometric holds, then heavy slow squats, then plyometrics. We cover tendon treatments in depth in our guide to tendonitis treatment in Canada.
BPC-157 and TB-500: what the knee research shows
Searches for “BPC-157 knee” have grown quickly, mostly because of podcasts and forums. Here is what the evidence actually says.
Animal and cell research
BPC-157 is a 15-amino-acid peptide derived from a gastric protein. In rat studies it has improved healing of tendons, ligaments, muscle and bone, and in cell studies it promoted the growth and migration of tendon fibroblasts and new blood-vessel formation (Gwyer et al., 2019). Knee tissues like ligaments and the outer meniscus depend on exactly those processes.
Human data
The only published human report specific to the knee is a retrospective look at 16 patients with various kinds of knee pain treated at a US clinic, most of whom said their pain improved (Lee & Padgett, 2021). There was no control group and no blinding, so it cannot show that BPC-157 caused the improvement. There are no randomized trials in knee osteoarthritis or meniscus tears.
TB-500
TB-500 is a synthetic fragment of thymosin beta-4, a protein involved in cell migration. It has been studied in animal models of wound, muscle and heart repair, and is often researched alongside BPC-157. Like BPC-157, it has no controlled human trials for knee conditions.
BPC-157 and TB-500 are research compounds. Neither is approved in Canada, both are banned in tested sport, and Health Canada warned in April 2026 against injecting peptides bought online. The animal data justify research, not treatment. If you have knee pain, the exercise, weight and medication options above have far stronger evidence. For the full picture, see what is BPC-157? and BPC-157 vs TB-500.
| Research compound | Studied for | From |
|---|---|---|
| BPC-157 | Tendon, ligament, muscle repair (animal) | $22 |
| TB-500 | Cell migration, tissue repair (animal) | $55 |
| BPC-157 + TB-500 blend | Combined research | $70 |
| GHK-Cu | Collagen and repair signalling (lab) | $49 |
Sold for laboratory research use only, with independent lab reports in our COA library.
What it all costs in Canada
| Option | Covered by provincial plan? | Typical out-of-pocket |
|---|---|---|
| Family doctor, sports medicine physician, orthopaedic surgeon | Yes | None |
| X-ray, MRI (when ordered) | Yes | None, but MRI waits can be long |
| Physiotherapy / GLA:D | Limited, varies by province | Often paid privately or via extended benefits |
| Diclofenac gel | Over the counter | Low |
| Cortisone injection | Usually yes, by a physician | Low |
| Hyaluronic acid | Usually no | A few hundred dollars per course |
| PRP | No | Several hundred dollars per injection |
| Knee replacement | Yes | None, but long waits |
A step-by-step plan
- Get a diagnosis. A clinician exam is more useful than jumping to an MRI.
- Start exercise therapy, ideally a structured program like GLA:D, and stick with it for at least 12 weeks.
- Use diclofenac gel for pain, with oral NSAIDs for flares if safe for you.
- Address weight if relevant; ask about medical options if lifestyle changes haven’t been enough.
- Consider a cortisone shot for a flare that blocks your exercise program.
- Discuss injections like HA or PRP knowing the evidence is mixed and you will likely pay out of pocket.
- Ask about a surgical referral early if function is severely limited despite good conservative care, given Canadian wait times.
Knee pain myths
- “Running wrecks your knees.” Recreational runners do not have higher arthritis rates than non-runners in most studies.
- “Bone on bone means you need surgery now.” Many people with severe X-rays manage well with exercise and weight loss.
- “Rest is best.” For arthritis, rest weakens the muscles that protect the joint.
- “Cracking sounds mean damage.” Painless clicking is usually harmless.
Why your hips and core matter for your knees
The knee is a hinge caught between two bigger joints: the hip above and the ankle below. Many knee problems are driven, at least partly, by what those joints are doing:
- Weak hip abductors and rotators (mainly the glutes) allow the thigh to drop inward during walking, stairs and squats. That “knee valgus” increases stress on the kneecap and the inner knee.
- Stiff ankles push more bending demand into the knee during squats and stairs.
- Foot mechanics can contribute to patellofemoral pain in some people.
That is why good knee programs nearly always include hip strengthening, sometimes before any direct knee exercises. In trials of patellofemoral pain, combining hip and knee exercises has outperformed knee exercises alone. For knee arthritis, strong hip muscles help offload the joint and improve walking.
| Area | Example exercises |
|---|---|
| Glutes (hip abductors) | Side-lying leg raises, banded side steps, clamshells |
| Glutes (extensors) | Bridges, hip thrusts, step-ups |
| Quadriceps | Sit-to-stand, wall sits, leg press, terminal knee extensions |
| Hamstrings | Bridges with heels on a step, hamstring curls |
| Calves and ankles | Calf raises, ankle mobility work |
| Balance | Single-leg stance, progressing to unstable surfaces |
Ice, heat, TENS and massage
- Ice can reduce pain and swelling after a flare or activity. Use 10 to 15 minutes with a cloth barrier.
- Heat eases stiffness, especially in the morning, and can be used before exercise.
- TENS (transcutaneous electrical nerve stimulation) units are inexpensive and help some people with pain modulation; evidence is mixed.
- Massage and manual therapy can relieve pain short-term and are reasonable add-ons to exercise.
- Acupuncture: small benefits in some trials, with ongoing debate about placebo effects.
These are comfort tools that make movement easier. None replaces strengthening.
Knee pain by age
Teens and twenties
Most often patellofemoral pain, Osgood-Schlatter disease (a tender bump below the kneecap in growing adolescents), patellar tendinopathy and sports injuries such as ACL or meniscus tears. Load management and strengthening resolve most overuse problems. A knee that gave way with a pop and swelled quickly needs assessment for a ligament tear.
Thirties to fifties
Overuse injuries continue, degenerative meniscus tears become common, and early osteoarthritis may appear, especially after an old injury. This is the window where building strength and keeping weight in check have the biggest long-term payoff.
Sixties and beyond
Osteoarthritis dominates. Exercise therapy, weight management and topical NSAIDs remain first-line. Falls prevention and balance work matter more. Knee replacement is considered when pain and disability are severe despite good conservative care.
Returning to running and sport
For most knee problems, the goal is to return to activity, not to quit it. A sensible return looks like this:
- Pain-free daily activities first: walking, stairs, getting up from chairs.
- Strength benchmarks: for example, being able to do controlled single-leg squats and step-downs without the knee collapsing inward.
- Walk-run intervals on flat ground, progressing time before speed.
- Gradual increases of no more than about 10 to 20% in weekly volume.
- Hills, speed work and cutting sports last.
Some soreness the next day is acceptable if it settles within 24 hours. Increasing pain over consecutive sessions is a signal to drop back a step.
FAQ
Tap a question to reveal the answer.
What is the best treatment for knee arthritis?
Structured exercise therapy, weight loss if overweight, and topical anti-inflammatory gel are the first-line treatments with the strongest evidence. Knee replacement is the most effective option for severe, end-stage arthritis.
Do cortisone shots help knee pain?
Yes, for a few weeks. Repeated injections every few months were linked to slightly more cartilage loss in one trial, so most clinicians limit how often they are given.
Does PRP work for knee arthritis?
Results are mixed. Some studies show benefit, but a rigorous placebo-controlled trial found PRP was no better than saline. It is not covered by provincial plans.
How long is the wait for a knee replacement in Canada?
Canada’s benchmark is 26 weeks from the decision to operate. In 2023, 59% of knee replacements met it, according to CIHI, with large differences between provinces.
Does Ozempic help knee pain?
In the STEP 9 trial, semaglutide 2.4 mg (Wegovy) reduced knee osteoarthritis pain more than placebo in people with obesity, mainly through weight loss.
Is arthroscopic surgery good for a torn meniscus?
For degenerative tears in people over 40, trials found surgery was no better than sham surgery or exercise therapy. It can help specific cases, such as a knee that is mechanically locking.
Does BPC-157 help knee pain?
Animal studies show faster healing of tendons and ligaments, but human evidence is limited to a small uncontrolled report. It is not an approved treatment in Canada.
Is walking good for knee arthritis?
Yes. Walking, cycling and swimming are recommended. Start with comfortable distances and build gradually.
Should I use ice or heat for knee pain?
Ice helps pain and swelling after a flare or activity; heat helps stiffness, particularly in the morning or before exercise. Both are comfort measures alongside strengthening.
How long does exercise take to help knee arthritis?
Most people notice improvement within 6 to 12 weeks of a structured program such as GLA:D. The benefits last as long as you keep exercising.
Related reading
- Tendonitis treatment in Canada
- Weight loss injections in Canada
- What is BPC-157?
- BPC-157 and TB-500 together
References
- Bannuru RR, Osani MC, Vaysbrot EE, et al. OARSI guidelines for the non-surgical management of knee, hip, and polyarticular osteoarthritis. Osteoarthritis Cartilage. 2019;27(11):1578–1589. PubMed
- Messier SP, Gutekunst DJ, Davis C, DeVita P. Weight loss reduces knee-joint loads in overweight and obese older adults with knee osteoarthritis. Arthritis Rheum. 2005;52(7):2026–2032. PubMed
- Bliddal H, Bays H, Czernichow S, et al. Once-weekly semaglutide in persons with obesity and knee osteoarthritis (STEP 9). N Engl J Med. 2024;391:1573–1583. PubMed
- McAlindon TE, LaValley MP, Harvey WF, et al. Effect of intra-articular triamcinolone vs saline on knee cartilage volume and pain in patients with knee osteoarthritis. JAMA. 2017;317(19):1967–1975. PubMed
- Bennell KL, Paterson KL, Metcalf BR, et al. Effect of intra-articular platelet-rich plasma vs placebo injection on pain and medial tibial cartilage volume in patients with knee osteoarthritis. JAMA. 2021;326(20):2021–2030. PubMed
- Sihvonen R, Paavola M, Malmivaara A, et al. Arthroscopic partial meniscectomy versus sham surgery for a degenerative meniscal tear. N Engl J Med. 2013;369:2515–2524. PubMed
- Gwyer D, Wragg NM, Wilson SL. Gastric pentadecapeptide body protection compound BPC 157 and its role in accelerating musculoskeletal soft tissue healing. Cell Tissue Res. 2019;377(2):153–159. PubMed
- Lee E, Padgett B. Intra-articular injection of BPC 157 for multiple types of knee pain. Altern Ther Health Med. 2021;27(4):8–13. PubMed
- Canadian Institute for Health Information. Wait times for priority procedures in Canada (2023 data). Reported April 2024. CIHI
This article is general information, not medical advice. See a physician or physiotherapist to diagnose and treat knee pain. TrueLabs research compounds are sold for in vitro and laboratory research use only and are not intended for human or veterinary use.